Hey All You Zombies

Few people think zombies actually exist. But many hold they are at least conceivable, and some that they are ‘logically’ or ‘metaphysically’ possible. It is argued that if zombies are so much as a bare possibility, then physicalism is false and some kind of dualism must be accepted.

(an excerpt from the lengthy 'Zombies' entry in The Stanford Encyclopedia of Philosophy via The Morning News)